Frame, to make possible in the same apparatus solvent recovery by distillation, after extraction of a substance has been made by that solvent



s. A. DE LACY FRAME, TO MAKE POSSIBLE IN THE SAME APPARATUS SOLVENT RECOVERY BY DIS'IILLATION, AFTER EXTRACTION OF A SUBSTANCE HAS BEEN MADE BY THAT SOLVENT Filed May 17, 192} 5 Sheets-Sheet 1 Mdy 5, 1925.

FRAME 1,536,259 s A. DE LACY TO MAKE POSSIBLE IN.THE SAME APPARATUS SOLVENT VERY BY DIS'IILLATION, AFTER EXTRACTION OF A SUBSTANCE HAS BEEN MADE BY THAT SOLVENT Filed May 17, 192?; 3 Sheets-Sheet 2 j w a five/212v? May 5, 1925. t 1,536,259

S. A. DE LACY FRAME, TO MAKE POSSIBLE IN THE SAME APPARATUS SOLVENT RECOVERY BY DIS'IILLATION, AFTER EXTRACTION OF A SUBSTANCE HAS BEEN MADE BY THAT SOLVENT Filed May 17, 1923 5 Sheets-Sheet 5 &

Patented May 5, 1925.

UNITED STAT-E PATENT. OFFICE.

sinner auens'r'us DE Lacy, or ACTON, ENGLAND.

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Application filed May 17,1923. Serial Ito. 639,578.

To all whom it may concern:

Be it known that I, SIDNEY Ancesros on Lac a subject of. the King of Great Britain, residing at 1 Dordrecht- Road, Acton, in the county of Middlesex, England, in the Kingdom of Great Britain, have invented a new and useful frame, to make possible in the same apparatus solvent recovery bydistillation, after extraction of a substance has been made by that solvent, of (which the following is a specification. I

The object of my invention is to malze possible in the same apparatus the recovery of the solvent by distillation, after that solvent has been used to extract a substance, held in a container by the shaped support forming part of the frame. This object is effected by turning the frame by means of a key fitted to it, thus avoiding any disturbance of the complete system for effecting these processes of extraction and distillation after the system, which includes the frame, has been assembled as shown later. By turning the frame, the platform, which forms part of it, is caused to shut off either the tube to lead away the vapour of the distilled solvent, or the tube of the reflux condenser. i The drawing sheets are three and similar numerals refer to similar parts throughout. They illustrate a frame constructed in accordance with the invention. Figs 1 and 2 elevation, front and side view of the frame showing the form of it in which the support is shaped to hold a folded papercontainer.

Figs. 3 and 4c elevation, front and side view of theframe. showing the form of it in which the support is shaped to holda moulded cylindrical paper container.

Figs. 5, 6 and 7 elevation andplan of the complete. system showing sufficient details of thesettingup to completely explain the relative positions of the parts, whenextraction of a substance is taking place by refluxing of the solvent. Two forms of frame shown, as in Fig. l and Fig 3, the plan being identicalin each case.

Figs. 8, 9 and 10, elevation and plan of the complete system showing sufficient details of the setting up to completely explain the relative positions of the parts when recovery of the solventby distillation 1s proceeding. Two forms of frame shown, as

in Fig. 1 and Fig. 3 the plan being identical in each case. y i a The frame consists of a thick circular rod 1 having two similar parallel flat surfaces out at the same distance from its upper end. The plane of these surfaces is parallel to the longer axis of the platform 3. To its lower end is attached an oval shaped platform 3 with its upper and lowersurfacesat rigl'it angles to the axis of the rod 1. A drip point i projects from its lower surface.

This drip point is in the form of one half of an inverted pyramid bisected by a plane passing through itsapex and two opposite corners of its base each side of it is triangular. The longest side of its triangular base coincides with the longer axis of the lower surface of the oval shaped platform, but this side does not extend to the junction of the upright 5 with the under side of the platform.

Connected to the lower surface of the platform 3 by means of the upright 5 (the axis of which 1s at right angles to the plane of the upper and lower surfaces of 3, and iolns the longer axis of 3 at such a point that the edges of 5 and 3 coincide) is a shaped sup port to hold the container of the substance to be extracted, so thatthe apex of the drip point always lies over the centre of the upper open end of the container.

The support may be as in Figs. 1 and 2 to hold a folded paper container. This form has two arms 6 and 7 attached to 5.

In the oval shaped arm 6, there isa gap through which the upper end ofthe container is inserted until it fills the arm: when k in position, the lower end of the container drops within, the closed. retangular arm 7 v at the base of the support.

Crossbar at 8 to support the base. of the container when dropped into the correct position.

(b) or. as in Figs. 3 and l to hold a moulded cylindrical paper container. This form consists simply of a closed horizontal circular arm 9 with a quadrant shaped vertical projection under it, of such a size that the base of the container is gripped firmly when pushed home through the circular arm against the projection.

Both forms (a) and (6) are made of round rod.

The general use of the frame is later illustrated in Figs. 5, 6, 7, and Figs. 8, 9, 10, by frames having the particular forms of support shown in Figs. 1 and 3.

Usc.This invention is for use in connection with any shaped vessel 10 closed with a three holed stopper 11 of sufficient depth to give support to the frame when in position, the upper surface and base of the stopper to be at right angles to its axis, the axis of each circular hole to be parallel to the axis of the stopper, the diameter of each hole to be the same throughout its length, and the diameter of the respective holes to be equal to (1) the diameter of the rod 1, (2) the outer diameter of the reflux condenser tube 18, (3) the outer diameter of the lead tube for distillation 14.

The end of the frame at 2, having the flat surfaces near it, is pushed through the correct hole in the base of the above mentioned stopper. When the fiat surfaces are just clear of the upper surface of the stopper, the slot of a rectangular key 12 is fitted on them. The lower horizontal side of this key then rests on the upper surface of the stopper 11, the upper horizontal side of the key rests against the uncut portion of the rod 1, ther by preventing any downward vertical move ment of the frame during any horizontal movement of the key 12.

The end of the circular tube 13 of the reflux condenser, the plane of which is at right angles to its axis, is now inserted in the correct hole in the upper surface of the stopper and is pushed down until it rests partially on the upper surface of the platform 3.

The end of the circular tube 14 (to lead away the vapour of the distilled solvent) the plane of which is at right angles to its axis is now inserted in the remaining hole in the upper surface of the stopper, and is pushed down until it also rests partially on the upper surface of platform 3.

By thus defining the position of the ends of the tubes 13 and 14, any upward vertical movement of the frame is prevented during any horizontal movement of the key 12.

Extraction, Figs. 5, 6, 7.The frame is now, by means of a horizontal movement of the key 12, moved into the position for refluxing, that is :with that part of the upper surface of the platform 8 above the drip point 4 partially closing the orifice of the reflux tube. 13, and the remainder of the upper surface of 3 entirely shutting off the tube 14, which can lead away the vapour of the sol vent.

The container 15. holding the substance to be extracted, is then inserted in the sup port, and the vessel 10, containing the solvent, is fitted on to the stopper '11, thus enclosing the frame.

Heat isapplied to the base of the vessel, causing the solvent to boil, the vapour from it passes up the reflux tube 13 to a suitable reflux condenser, is condensed there to a liquid, which flows down the reflux tube onto the upper surface of 3,--over its edge,- and falls from the drip point 4 into the open end of the container. It then percolates through the substance, passes through the container and, charged with extracted material, finally dr ps into the boiling liquid.

This process acts continuously until extraction is complete.

Distillation, Figs. 8, 9, 10.The frame is, by means of a horizontal movement of the key 12, moved into the position for distillation, that is z-with the upper surface of the platform 3 leaving the orifice of the tube 14 (for distillation) entirely free, while shutting off the reflux tube 13 completely.

The vapour then passes through the tube 14, and is finally cooled by a suitable condenser to the liquid state: by which process the solvent is recovered, and the extracted material left in the vessel. After the vessel has been allowed to cool, it may be removed from the stopper 11, so that the material within it may be examined, and the container 15, holding the unextracted material, may be easily taken from its support.

In both the above positions of the frame for extraction or distillation, the condensed liquid on the upper surface of 3 forms a liquid seal for a completely shut off tube, thus overcoming in a practical manner any slight fault in adjustment between the ends of the tubes 13 and 14, and the upper surface of 3.

I realize that the constructional details of the invention are liable to variation and by illustrating a preferred embodiment of it I do not intend to be limited thereto, it being my intention to claim all the novelty inherent in my invention as broadly as possible.

I claim,

1. A frame comprising a circular body having near its upper end means provided for the reception of a key by which the frame is operated and at its lower end a platform with a drip member attached to its under surface separate from an upright connecting to that surface a support to hold a container of a substance to be extracted so that the apex of the drip member lies over the upper end of the container.

2. A frame comprising a circular body having near its upper end surfaces cut for the reception of a key by which the frame is operated and at its lower end a platform with a drip member attached to its under surface separate from an upright connecting to that surface a support to hold a fold ed porous container of a substance to be extracted so that the apex of the drip member lies centrally over the upper end of the container.

3. A system for extraction and solvent re covery as described, comprising in combina- 4. In a system for extraction and solvent recovery as claimed a frame arranged so that the operation of the external key causes the platform of it to shut off either a reflux their ends su'liiciently close to the upper surface of the platform to allow condensed solvent to form a liquid seal for a tube orifice completely covered by the platform.

5. In a system for extractlon and solvent recovery as claimed, a frame arranged through the stopper or cap of the extraction vessel so that during the extraction of a substance within a container, the platform of the frame shuts off the distillation tube completely while partially closing the orifice of the reflux tube whereby condensed solvent flows onto and over said platform to fall from the drip member into a, container held by the support which forins part of the tube or a distillation tube both placed with f rame.

In witness whereof I have hereunto set my hand at London in England this second day of May A. D. 1923.

SIDNEY AUGUSTUS 1m LACY. 

